Patent US2612958A successfully refreshed from Google Patents.
US2612958A
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Hydraulically operated enginepropeller control
Assignee: Motors Liquidation Co
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Filing: 1945-08-30
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Granted: 1952-10-07
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Expires: 1965-08-30
Abstract
No abstract record available.
Inventors
- 👤 David A Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:12
CPC Classifications
B; B63; B63H; B63H3/00; B63H3/10; B63H3/06; B63H3/08; B64; B64C; B64C11/00; B64C11/30; B64C11/38; B64C11/42; Y; Y10; Y10S; Y10S60/00; Y10S60/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2307102A
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US2348323A
Cited
CH212020A
Cited
US2403532A
Cited
US2377633A
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US2404552A
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US2435080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |